Why is it that certain divisions can't be split for apparently no reason? Is this a bug or something? I have several divisions that I assembled with no-name commanders, and when I attempt to split them, maybe one or two brigades will be removed from the division, but the commander, the HQ, and most of the other units remain intact. I can give concrete examples of this if necessary. Sometimes the option to split the division will still be enabled after I do this, and when I try to split it again - the game crashes.
This is irritating because I can't do any real reorganizing - these commanders are just "interim" guys that I'm going to replace as better generals become available.